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References
- 1 2 3 "Harold L. Alden". Virginia.edu. Archived from the original on 7 February 2015. Retrieved 11 December 2013.
- Sources
- Van De Kamp, Peter (March 1964). "Harold Lee Alden (obituary)". Quarterly Journal of the Royal Astronomical Society. 5: 291. Bibcode:1964QJRAS...5..291V.
- Harold Lee Alden Archived 2015-02-07 at the Wayback Machine
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